EP1804533B1 - Verfahren zur Übertragung von digitalen Nutzdaten - Google Patents

Verfahren zur Übertragung von digitalen Nutzdaten Download PDF

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Publication number
EP1804533B1
EP1804533B1 EP07106643.5A EP07106643A EP1804533B1 EP 1804533 B1 EP1804533 B1 EP 1804533B1 EP 07106643 A EP07106643 A EP 07106643A EP 1804533 B1 EP1804533 B1 EP 1804533B1
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EP
European Patent Office
Prior art keywords
mobile station
channel
data
user data
stage
Prior art date
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Expired - Lifetime
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EP07106643.5A
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German (de)
English (en)
French (fr)
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EP1804533A1 (de
Inventor
Dirk Lappe
Martin Hans
Josef Laumen
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Ipcom GmbH and Co KG
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Ipcom GmbH and Co KG
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Application filed by Ipcom GmbH and Co KG filed Critical Ipcom GmbH and Co KG
Priority to EP10181403.6A priority Critical patent/EP2367396B1/de
Publication of EP1804533A1 publication Critical patent/EP1804533A1/de
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices
    • H04W88/181—Transcoding devices; Rate adaptation devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices

Definitions

  • the invention is based on a method for transmitting digital user data according to the preamble of the main claim.
  • Methods for transmitting digital user data from a first mobile station to a second mobile station are already known and implemented, for example, according to the GSM standard (Global System for Mobile Communications) for voice transmission.
  • GSM Global System for Mobile Communications
  • a telephone device in which it is particularly advantageous in closed rooms with the help of a dual-mode base station to make calls over both an existing mobile as well as a landline telecommunications network.
  • the dual-mode base station which can also be described as a telephone twin station, has a DECT charging station and a DCS / GSM charging station with voice interface.
  • the dual-mode base station By plugging the DCS / GSM mobile station into the dual mode base station, it is enabled to receive mobile radio signals. These mobile radio signals are then converted into DECT signals. A DECT antenna then establishes the connection to the DECT mobile phone. Similarly, the PSDN / ISDN signals are converted and emitted via DECT.
  • a digital cellular communication system that supports call routing with better speech quality by avoiding unnecessary speech decoding when a call is routed from one network to another network.
  • a new information element contains a network code of the sending Mobile Service Switching Center (MSC), so that the receiving or the forwarded MSC can enter into a structured dialog with the sending MSC with regard to the speech codec.
  • MSC Mobile Service Switching Center
  • WO 96/16521 From the WO 96/16521 is a digital mobile communication system known with mobile stations and landline, which contain voice codecs.
  • the voice codecs of the fixed network are controlled so that the frames of the first base station are forwarded to the second base station with no voice coding or decoding, with only minor modifications by the pair of landline voice codecs connected to the tandem.
  • Transcoders which prevent tandem coding of speech.
  • the transcoders contain speech codecs that convert speech signals into speech parameters or speech parameters into speech signals.
  • the transcoders send and receive voice parameters through a PCM interface into a subchannel of the PCM voice samples. So tandem coding can be avoided while maintaining the standard PCM interface.
  • WO 96/23297 A1 For example, a method and apparatus for discovering and bypassing tandem voice coding is known. If both parties use the same voice codec, the resulting voice output signal will sound better if tandem voice coding is avoided. To do this, the local voice codecs exchange identification codes, in the mutual discovery of which packetized voice data and redundancy information replace the least significant bits of the transmitted PCM sample. When the redundancy check of the voice codecs receives valid packetized data, the local voice codec stops its PCM transmission.
  • the invention is characterized by the features of the main claim 1.
  • the inventive method with the features of the main claim has the advantage that in the method for transmitting digital user data from a first mobile station via a relay station to a second mobile station from the intermediate station signaling data are transmitted to the second mobile station, wherein the signaling data information about the type the coding of the user data in the first stage after the first mobile standard in the form of a phone number of the first mobile station that the signaling data are transmitted one or more times via a separate control channel from the intermediate station to the second mobile station, and that from the second mobile station in the second stage decoded payload data in response to the second mobile station received signaling data from the second mobile station in the first stage are source decoded.
  • the payload data from the first mobile station for transmission in a first telecommunication network is coded in a first stage, preferably source coded, and coded in a second stage, preferably channel coded, that in the first and in the second stage coded user data are transmitted in the form of a first bit stream via a transmission channel of the first telecommunication network for a first mobile standard to an intermediate station that decodes the payload of the first bit stream from the intermediate station in the second stage, preferably channel decoded, that the payload from the intermediate station for the transmission in a second telecommunication network according to a second mobile radio standard in the second stage coded, preferably channel coded, be that the coded according to the first standard mobile radio in the first stage user data via a transmission channel of the second telecommunication network for z be transferred to the mobile station, that from the intermediate station signaling data transmitted to the second mobile station, the signaling data containing information about the type of coding of the payload data in the first stage, decoding the payload data from the second mobile
  • the payload data received in the intermediate station is only decoded in the second stage, but not in the first stage.
  • a coding in the first stage for the transmission of user data in the second telecommunication network is then not required.
  • Decoding in the first stage of the payload data received in the second mobile station can then take place by evaluation of the signaling data transmitted by the intermediate station.
  • a transcoding between different codes for the coding in the first stage for transmission in the respective telecommunications network can thus be avoided, thereby saving on computational effort and the resulting in a transcoding user data loss can be avoided.
  • the user data in the first telecommunication network is transmitted according to a first mobile radio standard, in particular according to the GSM standard (Global System for Mobile Communications), coded in the first and in the second stage, preferably source-coded and channel-coded, that the user data in the second telecommunication network according to a second mobile radio standard, in particular according to the UMTS standard (Universal Mobile Telecommunications System), together with the signaling data, the information about the coding of the user data in the first stage after the first mobile standard, in the second stage coded, preferably channel-coded, transmitted and that the second mobile station in the second stage decoded, preferably channel-decoded, payload data from the second mobile station after evaluation of the signaling data according to the first mobile radio standard decoded in the first stage, preferably source decoded.
  • GSM Global System for Mobile Communications
  • UMTS Universal Mobile Telecommunications System
  • payload data may be transmitted between mobile stations, each having a different air interface standard air interface, without requiring transcoding of the payload data with respect to the first-stage coding code, provided that the second mobile station receiving the payload data is in the Able to perform a decoding of the received user data in the first stage after the first mobile standard.
  • FIG. 1 An embodiment of the invention is illustrated in the drawing and explained in more detail in the following description.
  • the sole figure shows a block diagram for the transmission of user data from a first mobile station via an intermediate station to a second mobile station via different telecommunication networks.
  • the first mobile station 1 denotes a first mobile station, which is realized according to a first mobile radio standard.
  • the first mobile standard may be, for example, the GSM standard (Global System for Mobile Communications).
  • the first mobile station 1 is to be designed below as a GSM mobile station.
  • the first mobile station 1 comprises a coder 25 designed as a source coder for coding in a first stage, which is designed according to the first mobile radio standard, in the example described according to the GSM standard.
  • the source coder 25 is connected to a first transceiver unit 40, to which a first transceiver antenna 45 is connected, via a first coder 35 for coding in a second stage, which is likewise realized according to the first mobile radio standard , From the first transmitting / receiving antenna 45, radio signals according to the first mobile radio standard can be transmitted to a second transmitting / receiving antenna 50 of a relay station 15 via a first telecommunication network 10, which in the described embodiment is designed as a GSM network become.
  • the intermediate station 15 comprises a second transmitting / receiving unit 55, to which the second transmitting / receiving antenna 50 is connected.
  • the second transmitting / receiving unit 55 is connected to a first decoder 60, designed as a channel decoder, for decoding in the second stage, which is connected to a controller 65 of the intermediate station 15.
  • the controller 65 is connected via a second encoder 70 designed as a channel coder for coding in the second stage to a third transmitting / receiving unit 75 of the intermediate station 15, to which a third transmitting / receiving antenna 80 is connected.
  • radio signals are transmitted to a second mobile station 5 according to a second mobile radio standard via a second telecommunication network 20.
  • the second mobile radio standard can be, for example, the UMTS standard (Universal Mobile Telecommunications System).
  • the figure also shows for the intermediate station 15 only required for the description of the method according to the invention function blocks.
  • the second mobile station 5 comprises a fourth transmitting / receiving unit 90 to which the fourth transmitting / receiving antenna 85 is connected.
  • the fourth transmitting / receiving unit 90 is also connected to a second decoder 95, designed as a channel decoder, for decoding in the second stage, to which an evaluation unit 100 is connected.
  • the second channel decoder 95 is connectable via a switch 105 which can be controlled by the evaluation unit 100 either to a first decoder 30 designed as a source decoder for decoding in the first stage or to a second decoder 110 designed as a source decoder for decoding in the first stage.
  • the first source decoder 30 is realized according to the first mobile radio standard and the second source decoder 110 is realized according to the second mobile radio standard.
  • the UMTS standard is to be selected for the second mobile radio standard, so that the second mobile station 5 is at least partially designed as a GSM / UMTS mobile station.
  • the source encoder 25 is supplied with digital user data, which may be video data, audio data, text data, voice data and / or any other desired data.
  • the source coder 25 is then designed as a voice coder according to the first mobile radio standard, in this example according to the GSM standard.
  • the voice coder 25 may be based on the GSM standard ITU-T G.729.
  • the voice encoder 25 performs source coding of the user data supplied thereto as voice data according to the GSM standard.
  • the voice data source-coded in this manner are supplied to the first channel encoder 35, which performs channel coding of the voice data, for example, convolutional coding and block coding according to the GSM standard.
  • the source and channel coded voice data in this way are then transmitted via the first transmitting / receiving unit 40 from the first transmitting / receiving antenna 45 in the form of a first bit stream via a transmission channel of the first formed as a GSM network telecommunications network 10 to the intermediate station 15.
  • the bit stream received by the second transmitting / receiving antenna 50 is then supplied to the first channel decoder 60 via the second transmitting / receiving unit 55.
  • the first transmitting / receiving antenna 45 forms with the second transmitting / receiving antenna 50 a so-called GSM air interface.
  • the source and channel encoded voice data of the first bit stream are then channel decoded in the first channel decoder 60 according to the GSM standard.
  • the channel-decoded voice data in this way are further source-coded and are supplied to the controller 65.
  • call identification data was transmitted from the first mobile station 1 to the intermediate station 15, identifying the second mobile station 5 as a destination subscriber for the voice data to be transmitted.
  • This call identification data was generated, for example, in a controller (not shown in the figure) of the first mobile station 1, channel-coded by the first channel coder 35 and transmitted in the first bitstream together with the voice data to the intermediate station 15. Together with the voice data, this call identification data is then also channel-decoded by the first channel decoder 60 and likewise fed to the controller 65.
  • the call information data can also be transmitted one or more times from the first mobile station 1 to the intermediate station 15 via a separate control channel separate from the voice data and comprise the call number of the second mobile station 5 as a destination station.
  • the controller 65 detects this call identification data and determines therefrom, as the destination subscriber for the voice data to be transmitted by the first mobile station 1, the second mobile station 5. It is known in the controller 65 that for transmission of the voice data from the intermediate station 15 to the second mobile station 5 is to set up a transmission channel in the second telecommunication network 20.
  • the transmission of the voice data in the second telecommunication network 20 takes place according to the second mobile radio standard, in the described embodiment according to the UMTS standard.
  • the third transmitting / receiving antenna 80 and the fourth transmitting / receiving antenna 85 thus constitute a UMTS air interface.
  • the controller 65 selects a data transmission service according to the UMTS standard, in which the channel-decoded but still source-coded according to the GSM standard voice data is embedded in a second bitstream according to UMTS standard.
  • the intermediate station 15 can also have the option of source decoding of received user data according to the GSM standard. In this case, it makes sense to transmit with the call identification data, for example, the phone number of the calling first mobile station 1 to the intermediate station 15 and to dispense with a source decoding of the received user data in the intermediate station 15 depending on the detection of this number in the controller 65.
  • Signaling data is also embedded in the second bit stream by the controller 65, the signaling data containing information about the type of source coding of the user data.
  • the signaling data thus indicate that the user data present as voice data in the example described are source-coded according to the GSM standard.
  • the voice data and the signaling data of the second bitstream are channel coded according to the UMTS standard for transmission in the second telecommunication network 20, for example also by a convolutional coding and a block coding.
  • the channel-coded voice data and signaling data of the second bit stream are transmitted to the second mobile station 5 via a transmission channel of the second telecommunication network, which in this example is a UMTS network.
  • the second bit stream with the UMTS standard channel-coded voice data and signaling data is received by the fourth transmitting / receiving antenna 85 and supplied to the second channel decoder 95 via the fourth transmitting / receiving unit 90.
  • the second channel decoder 95 performs channel decoding of the voice data and the signaling data of the second UMTS standard bitstream.
  • the evaluation unit 100 detects the channel-decoded signaling data, which, as is known, comprise information about the type of source coding of the received voice data of the second bit stream.
  • the evaluation unit 100 extracts from the channel-decoded signaling data of the second bit stream that the voice data of the second bit stream are source-encoded according to the GSM standard.
  • the evaluation unit 100 therefore controls the switch 105 such that the second channel decoder 95 is connected to the first source decoder 30, which is designed as a speech decoder according to the GSM standard.
  • the evaluation unit 100 extracts from the received and channel-decoded signaling data of the second bit stream that the speech data of the second bitstream are source encoded according to UMTS standard, it controls the switch 105 so that it according to the dashed representation in the figure second channel decoder 95 connects to the second source decoder 110, which is then formed as a speech decoder UMTS standard.
  • the second channel decoder 95 since the speech data of the second bit stream is source encoded according to the GSM standard, the second channel decoder 95 is connected to the first speech decoder 30 and the channel-decoded speech data in the second channel decoder 95 is source decoded in the first speech decoder 30.
  • the channel and source decoded speech signals present at the output of the first speech decoder 30 and the second speech decoder 110 are then supplied to further functional blocks, not shown in the figure, for further processing.
  • the signaling data can also be transmitted from the intermediate station 15 to the second mobile station 5 one or more times via a separate control channel separated from the user data and in turn comprise the calling number of the calling first mobile station 1, based on which the evaluation unit 100 also for connection of the first speech decoder 30 to the second channel decoder 95 can be made.
  • At least video and / or audio data and / or text data can also be transmitted from the first mobile station 1 to the second mobile station 5 in the manner described and jointly in a bit stream.
  • the transmission in the first telecommunication network 10 and in the second telecommunication network 20 can take place, for example, frequency-wise or time-multiplexed, whereby different multiplexing methods can be used for the two different telecommunication networks 10, 20.
  • the intermediate station 15 for example, a conversion from time to frequency multiplex or vice versa to realize. Any other multiplex or channel access methods may also be used.
  • the method according to the invention thus makes it possible, for example, to transmit source-coded user data in accordance with the GSM standard via a data connection in accordance with the UMTS standard.
  • a demand for the UMTS standard as a third generation mobile radio standard can be met to ensure backward compatibility with the existing GSM standard as a second generation mobile radio standard to transmit payload data between mobile stations according to the GSM standard and mobile stations according to the UMTS standard to exchange a cellular connection.
  • the inventive method simplifies the useful data transmission between mobile stations that are implemented according to the GSM standard, and those mobile stations that are implemented according to both GSM standard and UMTS standard, wherein for the part of the data transmission from the corresponding telecommunications network to both after GSM standard as well as UMTS standard realized mobile station the UMTS air interface is used.
  • the user data is of a quality which has not been reduced by a transcoding between a source code according to the GSM standard and a source code according to the UMTS standard.
  • the first telecommunication network 10 and the second telecommunication network 20 can each also be designed as a hybrid GSM / UMTS network, which combines the functionality of a GSM network and a UMTS network.
  • the first telecommunication network 10 and the second telecommunication network 20 can also be identical.
  • the user data from the first telecommunication network 10 via one or more arbitrary fixed networks and optionally corresponding intermediate stations to the second telecommunication network 20 and from there to the second mobile station 5, wherein a transcoding with respect to the source code of the user data, ie a Source decoding and re-source coding in the corresponding intermediate stations not done, but only a channel decoding and possibly a renewed channel coding.
  • the standard provided in North America IS95, (Interim Standard 95), provided in Japan Standard PDC, (Personal Digital Cellular), or the like can be selected.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
EP07106643.5A 1998-07-24 1999-07-23 Verfahren zur Übertragung von digitalen Nutzdaten Expired - Lifetime EP1804533B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10181403.6A EP2367396B1 (de) 1998-07-24 1999-07-23 Verfahren zur Übertragung von digitalen Nutzdaten

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833318A DE19833318C2 (de) 1998-07-24 1998-07-24 Verfahren zur Übertragung von digitalen Nutzdaten
EP99947246A EP1101378B1 (de) 1998-07-24 1999-07-23 Verfahren zur übertragung von digitalen nutzdaten

Related Parent Applications (1)

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EP99947246A Division EP1101378B1 (de) 1998-07-24 1999-07-23 Verfahren zur übertragung von digitalen nutzdaten

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP10181403.6A Division EP2367396B1 (de) 1998-07-24 1999-07-23 Verfahren zur Übertragung von digitalen Nutzdaten
EP10181403.6A Division-Into EP2367396B1 (de) 1998-07-24 1999-07-23 Verfahren zur Übertragung von digitalen Nutzdaten

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EP1804533A1 EP1804533A1 (de) 2007-07-04
EP1804533B1 true EP1804533B1 (de) 2017-10-18

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EP07106643.5A Expired - Lifetime EP1804533B1 (de) 1998-07-24 1999-07-23 Verfahren zur Übertragung von digitalen Nutzdaten
EP10181403.6A Expired - Lifetime EP2367396B1 (de) 1998-07-24 1999-07-23 Verfahren zur Übertragung von digitalen Nutzdaten
EP99947246A Revoked EP1101378B1 (de) 1998-07-24 1999-07-23 Verfahren zur übertragung von digitalen nutzdaten

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EP10181403.6A Expired - Lifetime EP2367396B1 (de) 1998-07-24 1999-07-23 Verfahren zur Übertragung von digitalen Nutzdaten
EP99947246A Revoked EP1101378B1 (de) 1998-07-24 1999-07-23 Verfahren zur übertragung von digitalen nutzdaten

Country Status (13)

Country Link
US (1) US6920124B1 (enExample)
EP (3) EP1804533B1 (enExample)
JP (2) JP4021622B2 (enExample)
KR (1) KR100661765B1 (enExample)
CN (1) CN1119910C (enExample)
AT (1) ATE362282T1 (enExample)
CY (1) CY1107064T1 (enExample)
DE (2) DE19833318C2 (enExample)
DK (1) DK1101378T3 (enExample)
ES (1) ES2286898T3 (enExample)
PT (1) PT1101378E (enExample)
TW (1) TW435024B (enExample)
WO (1) WO2000007397A1 (enExample)

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Publication number Publication date
KR100661765B1 (ko) 2006-12-28
KR20010071980A (ko) 2001-07-31
US6920124B1 (en) 2005-07-19
ATE362282T1 (de) 2007-06-15
EP2367396B1 (de) 2017-06-21
EP1101378A1 (de) 2001-05-23
EP1804533A1 (de) 2007-07-04
JP4021622B2 (ja) 2007-12-12
JP2002521987A (ja) 2002-07-16
WO2000007397A1 (de) 2000-02-10
JP2007074751A (ja) 2007-03-22
CN1311964A (zh) 2001-09-05
PT1101378E (pt) 2007-08-16
DE59914335D1 (de) 2007-06-21
DE19833318C2 (de) 2001-08-02
DE19833318A1 (de) 2000-02-03
EP2367396A1 (de) 2011-09-21
CN1119910C (zh) 2003-08-27
ES2286898T3 (es) 2007-12-01
DK1101378T3 (da) 2007-09-10
CY1107064T1 (el) 2012-10-24
JP4518414B2 (ja) 2010-08-04
EP1101378B1 (de) 2007-05-09
TW435024B (en) 2001-05-16

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